🇮🇳 Weather in Bihar

47 cities

Weather in Bihar

Bihar is home to 47 cities tracked on Mausam Online, including Patna, Gaya, Bhagalpur. Live weather, hourly forecasts and air-quality data are available for every city.

Climate & seasons

Weather in Bihar follows the South Asian monsoon calendar — hot pre-monsoon, wet monsoon (June–September) and a cooler dry season after October.

When to visit Bihar

Plan trips between October and March for the most pleasant weather. Summer (April–June) can be punishing. The monsoon delivers heavy rain but turns landscapes vivid green.

Air quality in Bihar

Air quality usually peaks (worst) between November and January. Summer afternoons can bring dust haze. Cleaner months: July–September, when monsoon rain washes the air.

Frequently Asked Questions

What is the weather in Bihar today?

Weather in Bihar varies by region. Cities like Patna, Gaya, Bhagalpur are listed above with current temperature, rain and AQI. Click any city for a full hourly + 7-day forecast.

When does the monsoon arrive in Bihar?

Bihar receives most of its annual rainfall during the southwest monsoon (June–September), with the bulk in July–August.

Which is the largest city in Bihar?

Patna is the largest city in Bihar. We provide live weather forecasts for 47 cities across the region.

How often is the weather data updated?

Every city's weather and AQI data refreshes every 60 minutes from the ECMWF + GFS global models via Open-Meteo. See "How we predict the weather" for full sourcing.